Tag: Science Daily

1/9/19--More than half of people who take medical marijuana for chronic pain say they've driven under the influence of marijuana within two hours of using it, at least once in the last six months, according to a new study lead by Erin E. Bonar, Ph.D., assistant professor of psychiatry and a practicing clinical psychologist at the U-M Addiction Treatment Services. Read

12/31/18--Cannabis resin and herbal cannabis have significantly increased in potency and in price, according to the first study to investigate changes in cannabis across Europe. The study, published on Sunday, December 30 in the journal Addiction by researchers from the University of Bath and King's College London, draws on data collected from across 28 EU Member states, as well as Norway and Turkey by the European Monitoring Centre for Drugs and Drug Addiction. Read

11/6/18--Adolescent marijuana use may alter how neurons function in brain areas engaged in decision-making, planning and self-control, according to researchers at the University of Illinois at Chicago. The findings are the result of an animal model study focused on the structural development of the prefrontal cortex, or PFC, which controls high-level cognitive functions. Read

11/6/18--Research released today underscores both the dangers and the therapeutic promise of marijuana, revealing different effects across the lifespan. Marijuana exposure in the womb or during adolescence may disrupt learning and memory, damage communication between brain regions, and disturb levels of key neurotransmitters and metabolites in the brain. Read

11/6/18--New research revealed today highlights the power of animal studies to explore mechanisms of opioid addiction, withdrawal, and relapse to inform new prevention strategies and treatments for people. Read

11/6/18--A new report released by the Drug Enforcement Administration finds most overdose deaths are caused by prescription drugs, including opioids. While opioid abuse continues to plague certain states more than others, each state is unique in how it attempts to stem the crisis and its effect on families. These differences have resulted in significant variation across the country between opioid prescription rates and the number of children placed into foster care. Read

9/28/18--Most teens who've tried marijuana have used the drug in more than one form, including products that are smoked, eaten, or vaped, new USC research shows. The study, published Friday in JAMA Network Open, raises concerns about adolescent health amid a booming marijuana market that touts sleekly packaged products claiming an array of health benefits. Read

9/12/18--The findings of a new study, published in the International Journal of Drug Policy, demonstrate a high level of understanding among people who use drugs regarding ways to prevent an overdose and some adoption of these methods, but the researchers assert that more needs to be done to prevent overdoses. Read

8/21/18--In the largest known brain imaging study, scientists from Amen Clinics (Costa Mesa, CA), Google, John's Hopkins University, University of California, Los Angeles, and the University of California, San Francisco evaluated 62,454 brain SPECT (single photon emission computed tomography) scans of more than 30,000 individuals from 9 months old to 105 years of age to investigate factors that accelerate brain aging. SPECT tomography evaluates regional cerebral blood flow in the brain that is reduced in various disorders. Read

8/10/18--Adolescents with serious conduct and substance use problems are five times more likely to die prematurely than their peers, with roughly one in 20 dying by their 30s, according to new CU Boulder research. The study, published today in the journal Addiction, also suggests that while drug and alcohol use among adolescents draws more attention, antisocial behavior -- including rule-breaking tendencies -- may be a more powerful predictor of early mortality. Read

8/11/18--About one in five college students reported in a survey that they knew someone who was addicted to pain medications, and nearly a third said they knew somebody who overdosed on painkillers or heroin, according to a team of undergraduate Penn State Lehigh Valley researchers. "This secondary exposure to opioid abuse may shine a light on the collateral damage that is often left out of the current debate about the epidemic," said Jennifer Parker, associate professor of sociology, Penn State Lehigh Valley. Read

7/9/18--Millennials living more dangerously and settling down later could be creating a new generation of addicted smokers and e-cigarette users, according to the surprising results of research by The University of Texas Health Science Center at Houston (UTHealth). Statistics highlighted in today's article in the Journal of Adolescent Health showed greater numbers of new smokers and e-cigarette users among young adults compared to adolescents, marking a reversal of previous social norms. Read

7/5/17--A pioneering study has found Australian parents who turned to medicinal cannabis to treat children with epilepsy overwhelmingly (75 percent) considered the extracts as "effective." Contrary to parental expectations, extracts generally contained low doses of cannabidiol (CBD) -- commonly considered to be a key therapeutic element and that has been successfully used in recent clinical trials to treat epilepsy. Read

3/12/18--Smoking at least ten cigarettes a day is linked to a higher risk of psychoses compared to non-smoking young people. The risk is also raised if the smoking starts before the age of 13. This has been shown in a study led by Academy Research Fellow, Professor Jouko Miettunen. The results were recently published in the journal Acta Psychiatrica Scandinavica. Read

3/5/18--Individuals who report having resolved a problem with cannabis use appear to have done so at younger ages than those who resolved problems with alcohol or other drugs and were less likely to use any formal sources of assistance or support, report investigators from the Recovery Research Institute at Massachusetts General Hospital (MGH). Read

2/22/18--Heroin is worse than other drugs because people inject it much sooner, potentially resulting in increased risk of injection-related epidemics such as hepatitis C and HIV, a new study shows. As more people use opioids, many switch to heroin because it's more potent and cheaper -- a trend that complicates disease prevention as health officials crack down on opioids. Read

2/22/18--Two papers published today look at the current evidence of the effects of medical marijuana laws and conclude there is little support that such laws increase recreational marijuana use among adolescents or reduce opioid overdose deaths. Read

6/28/18--Fatemeh Akhlaghi, the Ernest Mario Distinguished Chair in Pharmaceutics, is part of a team working to develop a novel medication to treat alcohol use disorder, the term scientists and health practitioners use. Funded by a $1.65 million grant from the National Center for Advancing Translational Sciences, a branch of the National Institutes of Health (NIH), the URI team is testing the safety and efficacy of a drug originally developed by Pfizer to treat obesity and diabetes. Read

12/9/17--While cigarette smoking has declined in the US for the past several decades, since 2002 the prevalence of smoking has increased significantly among people with an illicit substance use disorder, according to a new study. Researchers found more than half of individuals with a substance use disorder (56 percent) reported cigarette use in the past month, compared with 18 percent of those without a substance use disorder. Read

12/12/17--A study published in Pediatrics examined interdisciplinary provider perspectives on legal medical marijuana use in children with cancer. It found that 92 percent of providers were willing to help children with cancer access medical marijuana. However, providers who are legally eligible to certify for medical marijuana were less open to endorsing its use. Read

12/12/17--A chemical found in marijuana, known as tetrahydrocannabinol, or THC, has been found to potentially slow the process in which mental decline can occur in up to 50 percent of HIV patients, says a new Michigan State University study. Read

12/11/17--Young adults who use electronic cigarettes are more than four times as likely to begin smoking tobacco cigarettes within 18 months as their peers who do not vape, according to new research. The findings demonstrate that e-cigarettes are serving as a gateway to traditional smoking, contrary to their purported value as a smoking cessation tool. The study is the first nationally representative survey that followed for more than a year people 18 to 30 years old who were initially nonsmokers. Read

12/7/17--A study lead by David Plummer, a professor from James Cook University in Queensland, investigates why Australians are among the top users of illegal drugs in the world. New facts have been revealed about the motivations of recreational drug users. Research shows almost 40% of Australians aged 15 years and over have used one or more illicit drugs at some stage in their life, and approximately 17% within the past 12 months. Read

12/4/17--Many patients who are being treated for opioid addiction in a medication-assisted treatment clinic use marijuana to help manage their pain and mood symptoms. But, new research led by Marian Wilson, Ph.D., of the Washington State University College of Nursing found that frequent marijuana use seems to strengthen the relationship between pain and depression and anxiety, not ease it. Read

11/30/17--Researchers from Warwick Medical School found that adolescent cannabis use is an independent risk factor for future hypomania -- periods of elated mood, over-active and excited behaviour, and reduced need for sleep that are often experienced as part of bipolar disorder, and have a significant impact on day-to-day life. The Warwick research is the first to test the prospective association between adolescent cannabis use and hypomania in early adulthood, whilst controlling for important other factors that might explain this connection. Read

11/28/17--Researchers at the school's Tobacco Center of Regulatory Science (TCORS) analyzed data from 1,284 adult smokers in the United States and found more than 80 percent expressed discontent about their inability to quit, felt they were addicted to cigarettes and regretted they started smoking. Read

11/28/17--A synthetic cannabis-like drug in a pill was safe and effective in treating obstructive sleep apnea in the first large multi-site study of a drug for apnea funded by the National Institutes of Health. The study was conducted at Northwestern Medicine and the University of Illinois at Chicago (UIC). Read

11/25/17--Researchers analyzed the nicotine in smoke from popular brands of "small" or "filtered" cigars -- cigars that are almost identical to cigarettes except they're wrapped in leaf tobacco instead of paper. The researchers found that the level of nicotine found in small cigar smoke is similar to or greater than cigarette smoke. Read

11/5/17--Young adults dependent on marijuana and alcohol are less likely to achieve adult life goals, according to new research by UConn Health scientists. They examined data from the Collaborative Study on the Genetics of Alcoholism (COGA) to track the effect teenage alcohol and marijuana use has on the achievement of life goals, defined as educational achievement, full time employment, marriage, and social economic potential. The researchers also found that dependence may have a more severe effect on young men. Read

10/25/17--A pre-clinical study led by Indiana University scientists reports a promising step forward in the search for pain relief methods without the addictive side effects behind the country's current opioid addiction crisis. The research, which appears in the journal Biological Psychiatry, finds that the use of compounds called positive allosteric modulators, or PAMs, enhances the effect of pain-relief chemicals naturally produced by the body in response to stress or injury. Read

10/25/17--In recent years, teens have become far less likely to abuse alcohol, nicotine, and illicit drugs, according to researchersat Washington University School of Medicine in St. Louis. Teens also are less likely to engage in behaviors like fighting and stealing, and the researchers believe the declines in substance use and delinquency are connected. The drop in substance abuse among teens parallels findings in other recent surveys, but until now no one has looked at how the drop-off may be linked to other behavioral issues. Read

10/24/17--According to new data from Duke Health researchers, about a quarter of adults whose marijuana use is problematic in early adulthood have anxiety disorders in childhood and late adolescence. The findings, published in the Journal of the American Academy of Child and Adolescent Psychiatry, also shed light on an estimated 4 percent of adults who endured childhood maltreatment and peer bullying without resorting to chronic marijuana abuse, only to develop problems with the drug between the ages of 26 and 30. Read

10/23/17--A systematic review of published studies on the use of medical cannabis in children and adolescents finds a notable lack of studies and a minimal number of the randomized, controlled trials needed to confirm the effectiveness of a treatment. In their paper published in the journal Pediatrics, Massachusetts General Hospital (MGH) investigators Shane Shucheng Wong, MD, and Timothy Wilens, MD report that their review suggests only two pediatric uses of medical cannabis. One is to relieve chemotherapy-induced nausea and vomiting, and the other is to reduce seizures. Both are supported by existing studies. Read

10/6/17--A new study on cannabis use that involved 1,136 patients (from 18 to 40 years of age) with mental illnesses who had been seen five times during the year after discharge from a psychiatric hospital demonstrates that sustained used of cannabis is associated with an increase in violent behavior in young people. Moreover, the association between persistent cannabis use and violence is stronger than that associated with alcohol or cocaine. Read

9/25/17--A new study conducted in a cancer center in a state with legalized medicinal and recreational marijuana found that approximately one-quarter of surveyed patients used marijuana in the past year, mostly for physical and psychological symptoms. Published early online in CANCER, a peer-reviewed journal of the American Cancer Society, the study also revealed that legalization increased the likelihood for use among patients. Read

9/21/17--A research group discovered that seizures can be induced by natural Δ9-tetrahydrocannabinol (Δ9-THC, main constituent of marijuana) or the synthetic cannabinoid JWH-018 (main component of synthetic blend "Spice"). These results are considered important because people see marijuana as a soft drug, without dangerous health effects, and they are unaware of the particularly severe effect of those cannabinoids. Considering the recent irreversible spread of synthetic cannabinoids and their impact on human health, this data should serve as a public alert. Read

9/13/17--Marijuana may bring on temporary paranoia and other psychosis-related effects in individuals at high risk of developing a psychotic disorder, finds a preliminary study from researchers at Columbia University Medical Center (CUMC). In this double-blinded, placebo-controlled laboratory study, the researchers looked at the effects of marijuana in six high-risk young adults and six controls, all experienced and current marijuana smokers who were physically healthy. Read

8/16/17--Among US adults who were established smokers in the past five years, those who use e-cigarettes daily were significantly more likely to have quit cigarettes compared to those who have never tried e-cigarettes. Over half of daily e-cigarette users had quit smoking in the past five years, compared to 28 percent who had never tried e-cigarettes. This is one of the first studies to reveal the patterns of cessation prevalence among e-cigarette users. Read

8/17/17--A new study conducted by scientists at UC San Francisco reports that tobacco companies have known for decades that, without counseling, nicotine replacement therapy hardly ever works, and that consumers often use it to complement smoking. This insight from the formerly secret industry documents known as the "Tobacco Papers" reveals why companies that once viewed nicotine patches and gum as a threat to their cigarette sales now embrace them as a business opportunity, the researchers said. Read

8/15/17--According to new research from Binghamton University, State University of New York, while marijuana use amongst youth remains stable, youth admission to substance abuse treatment facilities has increased. As to why numbers are up, Miesha Marzell, assistant professor of social work at Binghamton University, says that it could be that people are seeing any kind of use as high-risk and want to make sure that, from a prevention standpoint, that they stay on top of it. Read

8/14/17--Researchers have surveyed previous studies to investigate the relationship between traumatic brain injuries and alcohol abuse. They found evidence that traumatic brain injuries in children and adolescents could be a risk-factor for alcohol abuse in later life, and they advise that brain injury survivors should be given special attention to address potential substance abuse issues. Read

8/9/17--Marijuana use is associated with a three-fold risk of death from hypertension, according to new research. Compared to non-users, marijuana users had a 3.42-times higher risk of death from hypertension, and a 1.04 greater risk for each year of use. There was no association between marijuana use and death from heart disease or cerebrovascular disease. Read

8/7/17--New research published in Epilepsia, a journal of the International League Against Epilepsy (ILAE), suggests that an investigational neurological treatment derived from cannabis may alter the blood levels of commonly used antiepileptic drugs. Read

7/27/17--Harm from alcohol can extend beyond the drinker, resulting in "secondhand harm" caused by intoxicated people. Prior research suggests that more than 70 percent of college undergraduates have experienced harm from other students' drinking. A new study examined the prevalence and types of secondhand harm among Canadian undergraduates, and whether certain personality risks for alcohol use disorder -- impulsivity, sensation seeking, hopelessness, anxiety, sensitivity -- can predict secondhand-harm exposure. Read

7/25/17--A pattern of escalating marijuana use in adolescents is linked to higher rates of depression and lower educational accomplishments in adulthood. Those findings come from a new study led by researchers from the Department of Psychiatry at the University of Pittsburgh School of Medicine and Pitt Department of Psychology published in the journal Addiction. Read

7/17/17--A study looking at the cumulative effects of depression in youth found that young people with chronic or severe forms of depression were at elevated risk for developing a problem with cannabis in later adolescence. Read

7/5/17--Going from an occasional user of marijuana to a weekly or daily user increases an adolescent's risk of having recurrent psychotic-like experiences by 159%, according to a new Canadian study published in theJournal of Child Psychology and Psychiatry. The study also reports effects of marijuana use on cognitive development and shows that the link between marijuana use and psychotic-like experiences is best explained by emerging symptoms of depression. Read

6/27/17--Researchers have identified a brain region involved in cocaine addiction. The findings could lead to targeted drugs or improved behavioral treatments for substance addiction, including opioid dependency. Read

6/27/17--A new study by researchers at Dartmouth has found that adolescents living in medical marijuana states with a plethora of dispensaries are more likely to have tried new methods of cannabis use, such as edibles and vaping, at a younger age than those living in states with fewer dispensaries. Read

6/20/17--Impairments using information that help with decision-making and planning simple tasks are linked with one's frequency of alcohol or drug use. A new study shows that cognitive impairments constitute a broader problem among substance users in the US general population. This is the first study to find associations between deficits in attention with frequency of binge drinking and use of marijuana, cocaine, opioids, tranquilizers, and stimulants in the general population ages 18 and older. Read

6/14/17--Oregon State University researchers compared marijuana usage among college students before and after legalization and found that usage increased at several colleges and universities across the nation, but it increased more at Oregon State University. None of the universities were identified in the study. Read

6/12/17--Use of marijuana in combination with alcohol by drivers is especially dangerous, according to a latest study conducted at Columbia University's Mailman School of Public Health. Drivers who used alcohol, marijuana, or both were significantly more likely to be responsible for causing fatal two-vehicle crashes compared to drivers who were involved in the same crashes but used neither of the substances. The findings are published in the journal, Annals of Epidemiology. Read

6/10/17--Researchers from the University of Bristol have found regular and occasional cannabis use as a teen is associated with a greater risk of other illicit drug taking in early adulthood. The study by Bristol's Population Health Science Institute, published online in the Journal of Epidemiology & Community Health, also found cannabis use was associated with harmful drinking and smoking. Read

6/8/17--New research looked at diverging trajectories of cannabis and tobacco policies in the US and attempts to explain some of the reasoning behind the different paths, while discussing possible implications. Read

6/1/17--According to a study by the University of Washington's Social Development Research Group (SDRG), adults who smoke marijuana often cut back after becoming parents but they don't necessarily quit. The UW research found that, in general, a greater percentage of nonparents reported using marijuana in the past year than parents. The study also found that participants who started using marijuana as young adults were much more likely to continue to use into their mid- to late 30s, even after they became parents. Read

6/2/17--Researchers at the University of Illinois at Chicago and the University of Chicago report that low levels tetrahydrocannabinol, or THC, the main psychoactive compound in marijuana, does reduce stress, but in a highly dose-dependent manner: very low doses lessened the jitters of a public-speaking task, while slightly higher doses actually increased anxiety. Read

5/31/17--Children who participated in the PROSPER (PROmoting School-community-university Partnerships to Enhance Resilience) program over seven years ago showed lower rates of substance abuse after high school graduation, according to a new study. According to Mark Feinberg, PROSPER's Pennsylvania principal investigator and research professor, these findings have very significant implications for the future of the nation's public health. If implemented broadly across communities, the PROSPER system has the potential to reduce drug and alcohol addiction over the long term and benefit everyone. Read

5/26/17--Results from a double-blind, placebo-controlled trial published in The New England Journal of Medicine revealed that children with Dravet syndrome, a severe form of epilepsy, had fewer seizures after taking a daily oral solution of cannabidiol, which does not have the psychoactive properties of marijuana. Over a 14-week treatment with cannabidiol, convulsive seizures dropped from a monthly average of 12.4 to 5.9, and during the study seizures stopped completely in 5 percent of patients taking cannabidiol. Read